This system includes creating and controlling frequence-scanning signal, datas acquiring and frequence peculiarity analyzing three main modules, and some extended modules.
其包括扫频信号产生与控制、数据采集和频率特性分析三个主要模块以及若干功能扩展模块。
Each slave is a small-scale control system com-posed by AT89S51 and its main function is frontal acquisition and control of datas.
每台从机都是由一台AT 89s51单片机组成的小型控制系统，主要进行前端数据采集与控制。
Selected method of main technical parameters of boom roadheader are expounded systematically, common experiential datas and computing formulas are given.
系统地阐述了悬臂式掘进机主要技术参数的选择方法，给出了常用的经验数据和计算公式。
The main property datas with various reinforcing materials and resin matrix are supplied. The results of relevant forming technique are also given.
给出了不同增强材料片材、不同基体树脂的主要性能数据和有关成形方法的结构效果。
The main property datas with various reinforcing materials and resin matrix are supplied. The results of relevant forming technique are also given.
给出了不同增强材料片材、不同基体树脂的主要性能数据和有关成形方法的结构效果。
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